Nautical Science Algorithms By Kenji Hasegawa This book provides an easy-to-understand explanation of all algorithms, from the basics of mathematics such as logarithms and trigonometric functions, which are the foundation of nautical algorithms, to nautical algorithms (astronomy and terrestrial navigation), navigational instruments, and operational techniques. It is an excellent reference book for those preparing for the 3rd to 5th class exams, 3rd class watch officer exams, and students. Book Data Published: September 1964 Size: A5 Pages: 400 Price: 4,950 yen (tax included) Publisher: Kaibundo Maritime Technology Examinations Marine Engineer